The study, published in Nature and featured on its cover, describes the supernova, SN2021yfj, as unusually rich in heavy elements such as silicon, sulfur and argon. Most supernovae typically reveal ...

印第安纳州FISHERS - American Resources Corporation (NASDAQ: AREC )的子公司ReElement Technologies Corporation周二宣布与美国磁铁制造商Vulcan Elements签订具有约束力的长期供应协议，为国内磁铁生产提供高纯度稀土氧化物。根据 InvestingPro ...